Somewhat depowered and thrown off by the use of his second eye. Seemingly takes the upperhand, but then is attacked by Harley. Then hurts Bruce, but the fight is interrupted when Harley destroys the building with explosives. Stalemate.
Basically Slade releases an evil God on her island and she kicks his ass for it. Although Slade wasn't necessarily fighting back. He hits her once and makes her bleed. His healing factor/durability holds up well against her attacks. Eventually she knocks him tf out.