does this need scripting? could you not make a spell that has a self paralysis effect and an effect for damage absorption?
You could use paralyze, but that would make the player fall over. There's an ice freeze shout thing that does something like this too (perhaps the same thing) but it also makes them fall over. Someone made a mod on the workshop the other day that made the freeze not make the target fall over, but I don't really remember the name. You could try and search for it and see what he did...
Other than that I got nothin.