If Naruto was involved, then it would have been Naruto.
Itachi would be bringing down his Susano'o arm on Sasuke and Naruto would stop it gamabunta.
"I'LL KICK YOUR ASS! DON'T HURT MY NAKAMA!"
If Naruto's not invovled, it would be offscreened and would be in the news paper.
You'd see Itachi in some grass village prison.