I was watching a youtube video that was summing up the events of the first Phantasy Star, and when he mentioned that Saccubus (Succubus) battle, he explained that you fought the Saccubus, but you lose the fight. I paused...

Am I the only one who wins that battle? I'm pretty sure that I always won the Saccubus battle, and IIRC it only gives you like 1 experience point when it's over. That's the main thing I remember about it. Am I remembering this wrong? Maybe confusing it with another game, or another battle in Phantasy Star?