You don't want to find out!
You don't want to stop taking EITHER of those meds suddenly. Stopping a benzo, like Xanax abruptly can actually be dangerous, causing seizures among other things, and Paxil is notoriously hard to come off of as it is, let alone stopping without a taper.
Please have your doctor help you safely and properly get off BOTH meds, preferably a doc who knows these meds well.
Update us when you can!
For me, there were too many side effects to count regarding Benzodiazapines.
For Paxil: A continual " swooshing type, electric sound n sensation in my head and eyes ". That wasn't good. Paxil isn't good. For me that is.