Not a bad idea, then I suppose run a getseconds passed script to force the armour to be equipped for x minutes, and upon x minutes counting down to 0, unequip the armour?
Wouldnt the player be able to see this though?
woops you said invincible not invisible, ok thats less complicated, I am not sure for Fallout, but for Oblivion it was setghost 1, then everything passes through you. you could also do a placeatme, that puts a dome around the player, but it is just collision, no actual mesh