for (one's) life

Desperately, urgently, or frantically, because or as if one's life is at stake. With the outcome of this game determining whether they'll continue in the tournament, the team will need to play for their lives. The reactor is going to blow any minute—run for your lives! With the cancer progressing at an alarming rate, Mary is now fighting for her life.

for life

for the remainder of one's life. The accident caused me to become blind for life. She will stay in prison for life.

for life

Till the end of one's life.