Board Thread:Theories and Speculation/@comment-25122992-20161202191623/@comment-27924662-20161219045716

a person with rinnegan can still easily react to enemy movement(especially since he can see those inner chakra points) genjutsu is a loss but I believe that sharingan genjutsu won't effect rinnegan user( superior eyes it can break the pattern easily set up by sharingan, it was one of the reasons why uchiha's weren't able to read the stone tablet completely and sasuke was unable to decipher kaguya's scroll). plus if I remember correctly nagato did use some genjutsu blocks or something.