Frankly this is a problem I didn’t have. I can barely print in English, but you’ll be glad to know that Dynamics GP 2015 Printing Arabic Characters – Resolved with March Hotfix.
Dynamics GP Essentials: Dynamics GP 2015 Printing Arabic Characters – Resolved with March Hotfix
Install, Upgrade & AdminGP 2015
Archived post from 2015. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.