With his feet, but not with his mouth. The constant complaining is actually annoying now. Bergonzi isn't going to give him any soft fouls that many other refs would, considering the atmosphere and build up. So he should just get on with playing, get physical with the defenders and either beat them or make sure he is properly fouled.
Cerci and De Ceglie had a little coming together as a Fiorentina goal kick was being taken, the Juve man gave him a push away in reaction, and then Cerci kicked him straight across the back of the legs. Clear red card.