Raven the fear magic using hero vs the Sinestro who literally uses fear energy. battle takes place in Gotham and combatants are fully rested charged. normal morals and victory by knockout or death.
Unfortunately Raven's never been put up against anything like a Lantern in the comics, so if she can effectively depower Sinestro is difficult to guess at. As far as I remember she's only had 2 encounters with them; one was Hal whom she thumped with her soulself when he tried to detain her (very early NTT-days) and the other was Kyle when she had gone completely bonkers at the very end of the NTT run.