결정에

to/on the decision

→ 결정
phrase Rare #26,657
to/on the decision 결정 means “decision,” and 에 is a particle whose translation changes with context. In these examples, it can mean “depending on,” “according to,” or “about” someone’s decision.
KO: 이 문제는 네 결정에 달려 있어.
EN: This matter depends on your decision.

은 그의 결정에 후회하지 않는다고 말했다.

Tom said he didn't regret his decision.