De Rossi warned Scudetto talk around Roma is harmful.
He said: "It started so badly and the game was over too quickly. We barely got going at all. We should've approached it differently, though we knew Juve were stronger than us.
"Nonetheless, it is a very long season and we will be able to have our say. After all, you don't face Juventus every week.
"Am I disappointed by Zdenek Zeman? No. I am disappointed by Roma, which includes myself. I do think we can grow and fight for third place, though.
"In my view it would be bad for the fans to think about the Scudetto, which I have always said. Looking at the other sides in the top places, if we have a great campaign then we can finish in the top three. That would be a very impressive achievement considering the situation."