"Danzō's Right Arm" (ダンゾウの右腕, Danzō no Migiude) is episode 209 of the Naruto: Shippūden anime.
Danzō finishes unwrapping the bandages on his arm and reveals ten Sharingan. Sasuke asks where he got the Sharingan from and Danzō says through various means. Sasuke decides that he doesn't want to know, as it would make him angrier. He then tells Danzō that he has decided to kill him. He then asks if Itachi was ordered to destroy the Uchiha. Danzō charges at Sasuke, but Sasuke uses his Susanoo to protect himself. Kakashi intends to stop Sakura from fighting Sasuke, while Yamato is instructed to bring Naruto back to Konoha, but Naruto collapses after hyperventilating. Danzō confirms to Sasuke that Itachi was instructed to destroy his clan. Sasuke then crushes Danzō, but Danzō comes out unharmed after each one of Sasuke's attacks. Karin observes the battle and watches on while analysing and staying hidden. Sasuke falls off the bridge and summonsGaruda to save himself. Later when Danzō finds himself in Sasuke's genjutsu, he sees "Itachi" standing behind Sasuke.