From Vespers for the feast:
Peter, leader of the glorious Apostles and rock of the faith,
and Paul, divinely inspired orator and light of the holy Churches:
as you stand before the throne of God,
intercede with Christ on our behalf.
Paul, the spokesman of Christ and founder of His teachings,
who earlier had persecuted Jesus the Savior,
now you fill the first throne of the Apostles, O blessed one.
Thus you saw things that cannot be spoken,
and ascending to the third heaven you cried:
“Come with me, and be filled with good things!”
…A joyful feast dawns upon the earth today:
the memorial of Peter and Paul,
the wise leaders of the Apostles.
Let Rome rejoice and be glad with us!
Let us keep feast, O brethren, in songs and hymns!
Rejoice, Apostle Peter, true friend of Christ our God!
Rejoice, beloved Paul, herald of the faith and teacher of the universe!
You have boldness before him, O chosen pair;
pray unceasingly that our souls may be saved!
(The texts for Matins for the feast can be read here.)
Two excellent video presentations on these saints: