Shielded by Faith

Target creature you control gains 0/+X until end
of turn each time it's dealt non-combat damage.
X is equal to the damage that would be dealt.
If you control a commander, that target gains Indestructible until end of turn as
well. If both, this spell has "Buyback {p/c}{p/c}"
"Our faith is an impenetrable shield!"
~Lazerus & Zelda