MY CAT IS TERRIFIED OF CEILING FANS

My kitty is 9 months old, and has never seen a fan before lol. Literally five minutes ago I brought him down to the den to see our Female cat who just had kittens (he's fixed). Well, as soon as we walked in the room he flipped out and clawed my neck trying to escap my arms! Now he's hiding under the table and he occasionally peeks out and stares at the ceiling with HUGE pupils! I tried holding him but he protested and went back under the table. So, WHAT DO I DO ABOUT THIS BEW FOUND PHOBIA OF MALONE'S?