At the climax of the battle, both Itachi and Sasuke run out of chakra. However, Sasuke reveals that his actions up until now were only a preparation for his final jutsu.
The Susano'o.
سوسانو: إله البحر والرّياح في الأساطير الشنتويّة
El Susano'o.
El Susano'o.
O Susano'o.
Сусаноо.