Fallen:
servitor protection

Hive:
knight shield
shrieker shell
that ep boss with a weak point on the back
that ep boss that gets a shield if enemies are too close

Vex:
hobgoblin stasis
hydra shields
shielded enemies and bubbles in Garden World strike

Cabal:
phalanx shield (carried)
phalanx shield (deployed)

Taken:
goblin protection
phalanx shield
blight bubble
ascendant meatball's protection
shields in Corrupted strike

Scorn:
void totem

Crucible:
titan barricade
ward of dawn

Misc:
harmony shields in blind well
bosses with immune phases:
 * Fikrul
 * Bracus Zahn in his bubble
 * Brakion in his triangle box
 * Nokris
 * Kargen
 * Nightmares
 * Primevals in Gambit Prime