How do you determine that this other guy shot you down? It really doesn't sound like he did. Sounds like you lost battery, antenna, switch, or something came loose in the plane. Look for the real cause so you get it fixed. Don't just assume because he was the only one on that you were shot down by him. Could it be that you stalled and just lost it bad enough to not be able to recover? Could one of the above possibilities come in to play? Too many yell "I was shot down" when they crash, and they never find the real reason they crashed, and then they crash again for the same reason.

Don't let it happen to you.