Is the rest of my life an idiom?

No, it's probably:

Become a survivor of a disaster

[Pronunciation]

[explanation] robbery: disaster; The rest of my life: a lucky life. Life that survived the disaster.

[Source] In the clear autumn, Feng Jia's "Poetry of Linghai Yunrilou": "The birds love the south branch; I sighed for the rest of my life after the robbery. "

The Nanjing Massacre exposed the crimes of Japanese fascism to visiting Japanese youth.

[narrowly escaped] from a narrow escape.

[antonym] Hongfu Qi Tian Ren Ji Tian Xiang