Shielded by Faith is a rare Enchantment — Aura card from Signature Spellbook: Gideon (SS2), collector number 5. Current market price: $2.86 (foil $5.81), TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature has indestructible. Whenever a creature enters, you may attach this Aura to that creature.