A Conversation with the Nine-Tails!! (九尾との対話!!, Kyūbi to no Taiwa!!) is chapter 309 of the Naruto manga.
The Nine-Tailed Demon Fox is surprised to see Sasuke within Naruto's subconscious, remarking that Sasuke is much like Madara Uchiha. Sasuke suppresses the fox in response, and as it fades it warns him not to kill Naruto. Sasuke and Naruto return their attention to the real world where Yamato, no longer playing nice, tries to capture Sasuke. Sasuke escapes and prepares to finish them off, but is stopped by Orochimaru. Orochimaru says that Team 7 should be spared since they might kill another member of Akatsuki, as a result making it easier to kill Itachi. Sasuke agrees, and they leave with Kabuto.