You need to clarify. You said you're looking for a continuation after 3.Bc4, when the move order you posted was 2.Bc4, with no move #3.
If you meant after 3.Nf3, which I think is common, then 3...d5 is pretty strong. If you meant after something else, let us know. 1.e4 c5 2.Nf3 d6 3.Bc4 is fine for white. Black can probably equalize with accurate play, but he's in for a struggle. After 2...e6 though, 3.Bc4 is probably a mistake.
That's why 2.Bc4 isn't played at the master level much, if at all.
I'm getting beat up against the Bowler Attack. Anyone have a continuation for Black after 3.Bc4? I've tried Nh6, but white trades bishop for knight. Nf6 loses my knight to pawn or white bishop. 2...e5 gets me in even more trouble.