I think I see what you mean, where if you're trapped in a nightmare and can't move. Then if you're able to become lucid and convince yourself it's a dream, you can wake up from it, or change the dream. I was thinking of the state of paralysis that is one of the transitional phases from awake to asleep that we're sometimes aware of at the time it's happening. I think what you might be talking about is once a dream has already started, and you're dreaming that you're paralysed and it goes on for a while and a bunch of scary stuff happens. So yeah, lucidity would help with that.

I think we were both right but talking about 2 different things and I misread what you meant