repel
repulse
fight off
rebuff
drive back

He tried to fight off the effects of the drug.

You know we have to fight them off all the time.

Now he had to try to fight off another one.

I tried to fight them off, but they were too strong.

He brought his hands up to fight the other off.

It will take a lot of resources to fight him off.

I tried to fight them off, found it difficult to move.

But at the same time, he wasn't strong enough to fight it off.

"He used to have to go away by himself to fight off a need to kill."

He might hurt himself even more trying to fight you off.