Shield of the Realm
Oracle Text
If a source would deal damage to equipped creature, prevent 2 of that damage.
Equip
Card Rulings
4/27/2018 If multiple sources would deal damage to the equipped creature at once (for example, several blocking creatures), 2 damage from each of those sources is prevented.
4/27/2018 If a creature is equipped with two Shields of the Realm, 4 damage will be prevented. Three Shields of the Realm will prevent 6 damage, and so on.
4/27/2018 If multiple replacement effects would modify how damage would be dealt, the controller of the permanent being dealt damage chooses the order in which to apply those effects.
Equipped creature has Absorb 2.
That should be the text.