Guardian of Faith is a Construct that can be summoned with the level 4 Conjuration spell, Guardian of Faith. Acting as immobile sentries, they will attack any enemies that get within range. Guardians of Faith take damage with every attack they make.
Concept Art of Shields that would have changed depending on deity.
Guardian of Faith evil model.
Notes
One can be found in the Rosymorn Monastery guarding a pile of skeletons. The Cleric that summoned it is one of those long dead skeletons (Last Notes of a Monk), and the fact that it is a permanent Guardian is attributed to a blessing of Lathander.