Episode 22 - Naruto (dub)

The episode serves to humble Sasuke. Having just faced Haku, Sasuke thought he was near elite level, but Lee shows him that brute speed and physical prowess (taijutsu) can overcome specialized techniques like the Sharingan.

Sasuke activates his Sharingan, expecting to easily read Lee’s movements. However, he discovers that even though he can see Lee’s movements, his body is too slow to react in time. Naruto (Dub) Episode 22

Here is a long-form write-up detailing the key events, themes, and character developments in this episode: The episode serves to humble Sasuke