化险为夷-----weather the storm

例句：
A:He was seriously hurt and a doctor performed an operation on him. What became of him?
他受了伤，医生给他动了手术。他的情况如何了？
B:Fortnnately, the doctor helped him weather the storm, but he needs to be in hospital for some time.
很幸运，那医生帮他化险为夷，但是他必须住院一段时间。

同义词：
escape/ go/ get off scot-free
bear a charmed life