He and the other sound ninja fight Sasuke in episode 109 (An Invitation from the Sound).
They fight episode 135-138
episode 134-138 is the final battle between sasuke and itachi
it was episode 137 when the fight started and ended at episode 138 but was explained in episodes 135 and 136 (in Naruto Shippuden)
When Sasuke leaves the village in search of power.In episode 129and128 MANGA SPOILERS Shortly after Sasuke kills Danzo he and Naruto get into a short clash.
Yes madara said so himself on manga 463 page 10
episode 1001
in a lot
that episode does not exist
episode 203
Episode 115.
episode 115
naruto fight against sasuke
i do not remember what the episode number was but i remember that it was right after sauske left the village it was 3 or 4 episodes after.
135 i think
shippuden 202-204
an episode called the end he fights his bro
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.