не испытывать судьбу

not tempt fate (Understandably unsettled by what they are seeing, one of the concerned family members actually wonders if it could capsize their boat, while the pair of would-be divers smartly decide that they rather not tempt fate by jumping into the lake while the weird animal is swimming there. -- пара ныряльщиков приняла разумное решение не испытывать судьбу