Board Thread:Versus Debates/@comment-30323490-20180607192958/@comment-32685487-20180728123945

Orochimaru didn't look at Itachi's eyes and he was still caught.. mind you Oro is a genjutsu expert yet he still got caught in it.

Danzo had a Sharingan of his own and still got caught in Sasuke's genjutsu and Shisui's genjutsu. B also got caught in Itachi's normal Genjutsu too and Gyuki had to get him out of it. Minato is not safe from Genjutsu that is your assumption alone.