Roar, Chidori! Brother vs. Brother!

is episode 84 of the original Naruto anime.

Synopsis
As Kisame and Itachi contemplate how best to carry Naruto, Sasuke arrives and attacks Itachi with his Chidori. Uninterested in their quarrel, Itachi stops the attack. To try and help Sasuke, Naruto attempts to summon a toad, though Kisame absorbs his chakra before he can do so. As Kisame prepares to attack Naruto, Jiraiya arrives to block the attack.