I need advice on this recent turn of events.

Background: I’ve been with this company for 5+ years and was promoted to supervisor. Most of the company is made up of women. I am good friends with them and don’t shit where i eat.

I was made aware of the fact two girls are currently trying to get me fired. Coworkers notified me of them actually plotting it out (overheard conversations between the two. apparently they’re discussing this shit openly). Allegedly they’re mad I rejected their advances at work since I make it a point to not get too close to female coworkers. Plus i’m seeing one of their best friends who doesn’t work here and they caught wind of it. Apparently they’ve already gone to my supervisors and tried to make accusations about me however i’ve yet to hear anything from the higher ups.)

Im not the kind of guy to sit back and wait for this to blow up. What’s my next move here?