None of them. The Zetans have the ability to travel lightyears (if they are from the usual star Zeta Reticuli then 39-ish lightyears). Apparently they've been able to do this for centuries. Humanity cannot do this.

The Zetans, if they so choose, and assuming some asshole from a vault isn't running loose on board, can employ a death ray from orbit and kill whatever they want.

The Zetas also have teleporter technology.

I think in a ground fight, only the Enclave and perhaps Institute could last a few minutes. The Enclave because they have equipment and the Institute because they can teleport an army of robots if needed. However, despite what Star Wars might have shown us, the Zetans have no need to put boots on the ground. They can simply bomb/fry anything from orbit.