LUX ULT + ON BRAUM AND HIS SHIELD = NO DMG (TILTED)

Unbreakable

• Braum raises his shield in a direction for several seconds, intercepting all projectiles causing them to hit him and be destroyed. He negates the damage of the first attack completely and reduces the damage of all subsequent attacks from this direction.

That's kinda his job, to block projectiles. I suggest shoot when its on cooldown or when hes not expecting it