magus lvl 47 don't care
There is your problem right there.
In all seriousness his ultimate equipment does protect against all of those statuses though.

Which 3 do you like to use? They all work, but I can be a little more specific if I know who you are using. I'm also assuming you have done all the optional quests.

If you haven't beaten all the Black Omens you can steal Prisim Hats and Dresses from the final form of Queen Zeal. It helps a lot as Prisim Hats will guard against these status effects. Did you pick up the Silver Stud as well as the Gold Stud? It can help if you have both.