Board Thread:Theories and Speculation/@comment-36512555-20200202084241/@comment-44142243-20200204155850

@Squinty yeah, I thought so. It wasn't explicitly mentioned that sage mode users are not susceptible to genjutsu. Maybe people like Itachi, shisui can put an average sage mode user in genjutsu. Also maybe Itachi could use a tsukuyomi at that range because it was his first time, his eyes were undamaged and he had a lot of chakra to use. Anyway after that he killed the other fodder uchihas using his sword.