In Cathedra S. Petri Apostoli ~ II. classis

The Chair of St. Peter (the Cathedra) by Gian Lorenzo Bernini, 1666 (From arsorandi:)

From divinumofficium:

Oratio V. Dóminus vobíscum. R. Et cum spiritu tuo. Orémus. Deus, qui beáto Petro Apóstolo tuo, collátis clávibus regni coeléstis, ligándi atque solvéndi pontifícium tradidísti: concéde; ut, intercessiónis eius auxílio, a peccatórum nostrórum néxibus liberémur: Commemoratio S. Pauli Deus, qui multitúdinem géntium beáti Pauli Apóstoli prædicatióne docuísti: da nobis, quaesumus; ut, cuius commemoratiónem cólimus, eius apud te patrocínia sentiámus. 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 Feria Sexta Quattuor temporum Esto, Dómine, propítius plebi tuæ: et, quam tibi facis esse devótam, benígno réfove miserátus auxílio. Per 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 God, Who when giving blessed Peter, Your Apostle, the keys of the heavenly kingdom, bestowed on him the power of binding and loosing, grant that by the help of his intercession we may be delivered from the bonds of our sins. Commemoratio S. Pauli O God, Who taught vast numbers of the Gentiles by the preaching of the blessed Apostle Paul, grant, we beseech You, that by honoring his memory, we may enjoy the benefit of his patronal intercession with You. 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 Feria Sexta Quattuor temporum Be merciful to Your people, O Lord, and as You give them the grace to serve You, make them new by Your loving help. 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.