に襲われる

be struck by

→ に
phrase Rare #36,279
be struck by Used for attacks as well as sudden feelings, symptoms, and natural disasters. に marks what or who causes the attack or experience.
JA: 午後になると、強い眠気に襲われる。
EN: In the afternoon, I’m overcome by sleepiness.

その男が大勢に襲われるのを見た。

I saw the man get attacked by a large group of people.

彼は突然せきの発作に襲われる。

He is suddenly struck by a coughing fit.

まずは、キラが『海賊』に襲われるかもしれない、とほのめかしておくことだ。

First, we should hint that Kira might be attacked by the “pirates.”

日本は頻繁に地震に襲われる。

Japan is frequently struck by earthquakes.