My shields repel hostile invaders and so are in some ways comparable to an immune system.

We have a right to defend them from hostile foreign invaders.

The white man, to him, is still a strange and hostile invader from nowhere.

The Boer commandos from the south particularly, but from any other hostile invader also.

Should mankind remain in isolation in order to one day become the victim of a hostile invader's surprise attack?

Small, incipient units were designated in the Brazilian coastline, with the main function of fending off hostile foreign invaders.

The search parties fanned out through the ruins, dozens of Mwellrets in each, armed and armored, a decidedly hostile invader.

A physically powerful god, he may ambush hostile invaders into fairy lands.

If we're hostile invaders, they don't want us to see anything, so they shield against everything we might scan with.

Unfamiliar enzymes were treated as hostile invaders and repelled.