The Nerazzurri lost at the Olimpico, so their lead at the top of the table has been cut to just one point.
"We are upset at the defeat, obviously, but also calm and looking forward. The only thing we were missing this evening was the second goal," said the striker.
"Unfortunately right after we equalised, Luca Toni got his goal and that really knocked the wind out of our sails.
"In my view a draw would've been the right result anyway, seeing as we hit the woodwork three times.
"In any case, this result does not change our season, as it still all depends on us. We wanted to win, didn't manage it, so now we must concentrate on the next game."