A simple application of wax to your metal surfaces will not only protect them from rust, but make your work slide so much easier.
Clean the rust, dust and other undesireables from the surface. Apply a generous layer of wax.
I’ve used both solid and liquid car waxes over time. Buff it out and go back to work. It will make a world of difference. You will need to reapply more often if you do a lot of work. Don’t forget router baseplates, too.