Noun
stroke of luck (plural strokes of luck)
(idiomatic) An instance of unexpected luck, usually good luck.
All of us are already civilian soldiers, without knowing it...The great stroke of luck for the military class's terrorism is that no one recognizes it. People don't recognize the militarized part of their identity, of their consciousness. Paul Virilio
Fortune is proverbially called changeful, yet her caprice often takes the form of repeating again and again a similar stroke of luck in the same quarter. Charlotte Brontë
It was a stroke of luck that there were about four to six leaders in power in the mid-'80s who really trusted one another and could really make things happen. Helmut Kohl
The film kept me from working as a secretary. It was a real stroke of luck. A miracle. Victoria Abril
Remember that not getting what you want is sometimes a wonderful stroke of luck. Dalai Lama
Jones (1992), p. 146 By a stroke of luck, a thaw prevented the Chatti from crossing the Rhine and coming to Saturninus' aid. Source: Internet