When the hurting stops, the conflict stops.
Sounds like starting a chase contest to me! This is a completely fine thing to do if you don't have to have total narrative control of your opponents to get what you want, which in this case I'm assuming is just "get away":
Transitioning to a Contest or Challenge
You may find yourself in a conflict scene where the participants are no longer interested in or willing to harm one another, because of some change in the circumstances. If that happens, and there’s still more to resolve, you can transition straight into a contest or challenge as you need. In that case, hold off on awarding the end-of-conflict fate points and whatnot until you’ve also resolved the contest or challenge.
In an earlier example, Cynere managed to get a vault door open so the three PCs could escape an endless horde of temple guardians. They all decide to run and try to lose them.
Now, the guardians and the PCs have mutually opposing goals but can’t harm one another, so now it’s a contest. Instead of running the next exchange, Amanda just starts setting up for the chase.
Fate SRD, Conflicts
Assuming you're alone, you can break and run from combat at any time circumstances would permit. You can probably even keep the "trip and fall" boost as a penalty to the guards' first action in the chase contest, assuming they're interested in pursuing you.
Now there's just the problem of deciding stakes for the contest. "You get away clean" vs "they capture you" or "they corner you and you have to fight", maybe? Anyway, once you hash that out, you can do a quick race to 3.