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.
If you are hiding another power,
don't hold back.
إن كنتَ تخفي قوّة أخرى فلا تتردّد
Wenn du noch eine Kraft versteckt
hältst, dann nur raus damit.
Se stai nascondendo altro potere,
è il momento di usarlo.
Se você está escondendo 
algo mais, não se segure.
Если что-то скрываешь,
 то лучше не стоит.