The power itself does not need to do damage but it can ground and stun you placing you in a kneeling position.
If I had a penny everytime Zod asked someone to kneel, I would fund his interdimensional trip to have a blind date with Daenerys, so they can ask each other to bend a knee.
Would be funny to use it in pvp a player is taking DOT and the other player uses an iconic power like Zod “kneel before me” causing that player whose taking DOT to be grounded and stunned in a kneeling position in their inevitable defeat