The Rossoneri defender is confident facing his old club will be too much for the Brazilian.
"It's because Kaka knows us and Real Madrid fear us," smiled Nesta in a Press conference. "They realise we have always done well in the Champions League.
"It will be exciting to see him again and play against him. He left wonderful memories in all of us in the locker room. We know his style, but players like him are unpredictable."
It will also be a battle between the top scorers in Europe, Raul and Pippo Inzaghi.
"Pippo has not promised us any goals, but I know he cares a great deal about his record. Raul is similar, they are players who in the box can be smarter than the rest."