To Each His Own Battle

is episode 121 of the original Naruto anime.

Synopsis
Ukon separates from Kiba and rejoins with Sakon so that he can recover. Kiba finds Akamaru, and the two flee down river, hoping to escape the brothers. Naruto, meanwhile, is unable to make a dent in Kimimaro, and his shadow clones are still rapidly defeated before they can land a blow. Elsewhere, Shikamaru believes to have picked up on the movements of Tayuya's creatures, though she quickly has them switch actions before Shikamaru can act.