Bevelry's first thoughts to the question was the Shield Charm and Glisseo. The former which had already been said and the latter being an obvious one. A good one, but too obvious. But she had another spell in mind.

The Slytherin raised her hand. "How about the Repelling Charm? Maybe the Isa rune can enhance the charm by repelling much more than small objects, which could be considered an act of self-defense." Or self indulgence. Like trying to keep large things from leaving; Exhibit A: an Antipodean Opaleye dragon.