Clash!

is episode 123 of the Naruto: Shippūden anime.

Synopsis
Sasuke asks where Itachi is and slices through Tobi to get to Deidara. Tobi is unfazed, shocking Sasuke, and Deidara gauges Sasuke's skills with his C1-level Exploding Clay. Sasuke escapes the explosions that ensue from Deidara's assaults, forcing him to rely on his C2 Dragon. Deidara and Tobi then begin their combined assaults, but Sasuke out maneuvers all of the pair's efforts and destroys the C2 Dragon. Deidara remembers his previous defeat at the hands of Itachi and, in rage, prepares his C4 Karura.