Cris 'Cyborg' Justino: 'Ronda, Don't Be Scared' ... Fight Me!

Cris "Cyborg" Justino has a message for Ronda Rousey -- STOP HIDING BEHIND YOUR PILLOW AND FIGHT ME!

Fresh off her dominating performance at UFC 198, Cyborg joined the guys on the "TMZ Sports" TV show and called out the UFC legend ... even using a prop to make her point!

You gotta watch the entire interview tonight on FS1 (9 PM PT, 12 AM ET) -- we also asked Cyborg if she thinks she could take Conor McGregor in the octagon ... wait'll you hear what she says!