를 벗어나면

if one leaves or goes outside

→ 를
phrase Rare #26,601
if one leaves or goes outside Used after a noun ending in a vowel to mean “if or when one leaves” a place, route, subject, or boundary. 벗어나다 can also mean “deviate from” or “go outside.” The form after a consonant-ending noun is 을 벗어나면.
KO: 궤도를 벗어나면 위험해요.
EN: If you leave the orbit, it’s dangerous.

로마를 벗어나면 당신이 운전해

Once we leave Rome, you drive.

— 달콤한 인생 (1960)