Question

What Abilities negate damage to the holder from Life Orb?

Answer 1

If a Pokémon with Sheer Force uses a move boosted by the Ability, it does not take damage from Life Orb for that move.

Sheer Force is the only ability to negate Life Orb damage.
EDIT: Magic Guard also negates the damage.

Source

Comments

So does Magic Guard.

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Whoops. My mistake. Sorry.