in a lot
He and the other sound ninja fight Sasuke in episode 109 (An Invitation from the Sound).
episode 1001
that episode does not exist
episode 203
Episode 115.
episode 115
naruto fight against sasuke
135 i think
shippuden 202-204
an episode called the end he fights his bro
Sasuke and Sakura never fight, Although they have a brief moment that could be considered a fight in the far future of the anime.
This fight between Danzo and Sasuke happens in Naruto Shippuden Episode 209: Danzo's Right Arm. More information about Itachi comes out in this episode as well.