Tridentine prayer: Deus, qui beáto Petro Apóstolo tuo, collátis clávibus regni caeléstis, ligándi atque solvéndi pontifícium tradidísti: concéde; ut, intercessiónis eius auxilio, a peccatórum nostrórum néxibus liberémur. (O God, by delivering the keys of the kingdom of heaven to Blessed Peter, Your Apostle, You bestowed upon him the pontifical power of binding and loosing; grant that, by the help of his intercession, we may be released from the bonds of our sins.)

Pauline prayer: All-powerful Father, you have built your Church on the rock of Saint Peter's confession of faith. May nothing divide or weaken our unity in faith and love.