Collect for the Confession of St. Peter:

Almighty Father, who inspired Simon Peter, first among the apostles, to confess Jesus as Messiah and Son of the Living God: Keep your Church steadfast upon the rock of this faith, that in unity and peace we may proclaim the one truth and follow the one Lord, our Savior Jesus Christ; who lives and reigns with you and the Holy Spirit, one God, now and for ever.