Naruto's Counterattack: Never Give In!

is episode 29 of the original Naruto anime.

Synopsis
Despite Naruto's timely appearance, Sasuke decides to sacrifice their scroll to ensure the team's survival. Before he can do so, Naruto takes the scroll from him, believing that the real Sasuke would never willingly give up. Naruto begins fighting the Kusagakure ninja and his snakes, tapping into the Nine-Tails' chakra in the process. The ninja, recognising Naruto as the Nine-Tails' container, seals the boy's access to the fox's chakra, rendering him unconscious. Naruto's efforts, however, rejuvenate Sasuke with determination, and he prepares to battle the Kusa shinobi.