Welcome to Allnurses.com.
I would check out the specifics of what is required for licensure in Cyprus, such as language requirements, etc. And you should be required to write the exam for the country. Plus, I do not know if you are on a visa that permits you to work.
The US actually doesn't require a license in the home country, but a completed set of transcripts where your schooling meets the requirements of this country. So, it is not different from many other countries.
For refresher programs, I prefer hands-on courses, that is where you will get the best experience. If you want to just do a review on your own, then I would recommend the Saunder's Comprehensive Review for the NCLEX-RN. It will give you excellent information.