This is the 10339th most frequent Japanese word.
駆ら
"駆ら" is the stem form of "駆られる," meaning "to be driven (by emotions or impulses)."
駆られて is used in this sentence to express being driven or motivated by a strong emotion or desire.
彼は成功への欲望に駆られて努力した。
He was driven by the desire for success and worked hard.
駆られて indicates the action is compelled by an inner emotion or curiosity.
好奇心に駆られて、新しい趣味を始めました。
Driven by curiosity, I started a new hobby.
駆られて here conveys an action initiated due to intense emotion, specifically fear.