I guess if we all believed that, we'd all be Catholics...So I will say with a clear conscience, Peter is NOT the rock of the church...Jesus is the Rock that the church was built upon...
Now that was easy wasn't it...
Eph 2:20 And are built upon the foundation of the apostles and prophets (not just one apostle), Jesus Christ himself being the chief corner stone;
Jesus is the Rock...Peter, like the rest of the apostles was a rock in the foundation but Jesus Christ is THE ROCK that the church was built upon...
Your conscience, valuable as it is, cannot dictate that the Greek language be other than it is.
Let's walk through the text.
su ei Petros = you are Rock
epi tauth th petra = and upon this same rock
oikodomhsw mou thn ekklhsian = I will build my Church.
That "su" in the first line is a second person personal singular pronoun. You are Rock. Not "I", not "my faith" but "you". There can be no referent but Peter. Taute in the second line means "same, identical" (e.g. tautology), "You are Rock and upon this SAME rock I will build my Church." Thus, the typical explanation about Petros/petra being two different things is specious, because that would make the text say: "you are a pebble and upon this same Rock I will build my church".
The whole rest of the passage is filled with the 2nd personal singular pronoun...Christ giving these extraordinary power/privileges: I will give YOU = "soi" the keys of the kingdom, power to bind and loose) not on all of the Apostles but on "SU"...on Peter. Whatever YOU bind will be bound in heaven and whatever YOU loose will be loosed in heaven.
There are statements of the Church Fathers that say that the Rock is Peter's confession. And they are right--it is. But it is ALSO Peter's person. His confession came from his person, and the two cannot be separated in this context, particularly in light of the Greek grammar which leaves no room for doubt that Peter's person is the referent.