Feria Secunda infra Hebdomadam Passionis ~ III. classis Commemoratio ad Laudes tantum: S. Cyrilli Episcopi Hierosolymitani et Ecclesiæ Doctoris

From divinumofficium:

Oratio V. Dóminus vobíscum. R. Et cum spiritu tuo. Orémus. Sanctífica, quaesumus, Dómine, nostra ieiúnia: et cunctárum nobis indulgéntiam propítius largíre culpárum. Per Dominum nostrum Iesum Christum, Filium tuum: qui tecum vivit et regnat in unitate Spiritus Sancti Deus, per omnia saecula saeculorum. R. Amen. Orémus. Commemoratio S. Cyrilli Episc. Hierosolymitani Eccl. Doct. Da nobis, quaesumus, omnípotens Deus, beáto Cyríllo Pontífice intercedénte: te solum verum Deum, et quem misísti Iesum Christum ita cognóscere; ut inter oves, quæ vocem eius áudiunt, perpétuo connumerári mereámur. Per eundem Dominum nostrum Iesum Christum filium tuum, qui tecum vivit et regnat in unitate Spiritus Sancti, Deus, per omnia saecula saeculorum. R. Amen.

Collect V. The Lord be with you. R. And with thy spirit. Let us pray. O Lord, we beseech You, make holy our fasting, and graciously lavish upon us forgiveness for all our sins. Through Jesus Christ, thy Son our Lord, Who liveth and reigneth with thee, in the unity of the Holy Ghost, ever one God, world without end. R. Amen. Let us pray. Commemoratio S. Cyrilli Episc. Hierosolymitani Eccl. Doct. Grant us, we beseech You, almighty God, through the intercession of the blessed Bishop Cyril, so to acknowledge You, the only true God, and Jesus Christ Whom You have sent, that we may be found worthy to be forever numbered among the sheep who hear His voice. Through the same Jesus Christ, thy Son, Our Lord, Who liveth and reigneth with thee in the unity of the Holy Ghost, God, world without end. R. Amen

Thanks to arsorandi:

From the Roman Breviary

Cyril of Jerusalem was given to the study of the Sacred Scriptures from childhood, and made such progress that he became an eminent champion of the true faith. He embraced the monastic state, and bound himself to perpetual chastity and austerity of life. He was ordained priest by St. Maximus, bishop of Jerusalem, and undertook the work of preaching the divine word to the faithful and instructing the catechumens, in which he won the highest praise. He was the author of those truly wonderful Catechetical Instructions which embrace clearly and fully all the teaching of the Church, and contain an excellent defence of the dogmas of religion against the enemies of the Faith. His treatment of these subjects is so distinct and clear that he refuteth not only the heresies of his own time, but also, by a kind of foreknowledge, as it were, those which were to arise later. And so he plainly teacheth the Real Presence of the Body and Blood of Christ in the wonderful Sacrament of the Eucharist. On the death of St. Maximus, the bishops of the province chose Cyril in his place.

As bishop he endured, like blessed Athanasius, his contemporary, many wrongs and sufferings for the sake of the faith at the hands of the Arians. They could not bear his strenuous opposition to their heresy, and thus assailed him with calumnies, deposed him in a pseudo-council, and drove him from his see. To escape their rage he fled to Tarsus in Cilicia and, as long as Constantius lived, he bore the hardships of exile. On his death, and at the ascension of Julian the Apostate to the empire, Cyril was able to return to Jerusalem, where he set himself, with burning zeal, to deliver his flock from errors and vices. He was driven into exile a second time, under the emperor Valens, but when peace was restored to the Church by Theodosius the Great, and the cruelty and insolence of the Arians were restrained, he was received with honour by the emperor as a most valiant soldier of Christ, and restored to his see. With what earnestness and holiness he fulfilled the duties of his exalted office was proved by the flourishing state of the church at Jerusalem at that time, as described by St. Basil who spent some time there on a pilgrimage to the holy places.

Tradition stateth that God made the holiness of this venerable prelate illustrious by signs from heaven. Among these is numbered the apparition of a shining cross, brighter than the rays of the sun, which was seen at the beginning of his episcopate. Not only Cyril himself, but pagans and Christians alike were witnesses of this miracle which Cyril, after having given thanks unto God in church, announced by letter to Constantius. A thing no less wonderful came to pass when the Jews were commanded by the impious emperor Julian to restore the Temple which had been destroyed by Titus. A violent earthquake occurred, and great balls of fire burst out of the earth, and consumed all the works, so that Julian and the Jews were struck with terror and gave up their plan ; all of which had been clearly foretold by Cyril. A little while before his death, he was present at the ecumenical Council of Constantinople, where the heresies of Macedonius, and, once more, that of Arius were condemned. After his return to Jerusalem, being nearly seventy years old, he died a holy death in the thirty-fifth year of his episcopate. Pope Leo XIII ordered that his Office and Mass should be said throughout the Universal Church.