Naruto Episode 28
Sasuke drives away the attacking Rain Genin. A a powerful gust of wind then separates Naruto from his team. Just as he reorients himself, Naruto is swallowed by a giant snake. In the meantime, Sasuke and Sakura are disabled by a Grass ninja. Before they even fight, Sasuke and Sakura have visions of their own deaths upon looking into his eyes, paralyzing them with fear. Regaining his composure, Sasuke flees with Sakura. The ninja pursues them, but Naruto, having killed the snake, arrives in time to save both of them.
Source: Wikipedia
Naruto Episode 28 – Eat or Be Eaten: Panic in the Forest
