Naruto S02E40 - 限界を越えて... サスケの決断!!

Sasuke and Gara face off each other, and while Sasuke manages to hurt Gara, his chakra is not strong enough to keep using the special lightning attack for more than once or twice per day. At the end of his strength, the curse caused by earlier Orochimaru's bite on his neck kicks in, and Gara sees the opening to finish him, only to be thwarted by Naruto's sudden appearance.