Does the Space Arcanum spell Untouchable protect against explosions? The fluff indicates that the mage dodges out of harms way, but what happens when the mage in the lethal blast radius of a large explosion?
If you have the ability to "hit the deck" and have the explosion pass overhead or go off nearby, then sure. But if you're unable to justifiably evade, dodge, dive for cover, or otherwise escape? Then no, you're toast.