The ME version is available on the cloud, and I would presume it might still be available from some resellers on DVD, but finding it will not be easy, and it will not run in parallel with the version you have now on the same machine (I think the name now is NA/ME for North Africa/Middle East). You might want to take a look at the World Tools plugin from In-Tools.com as an alternative. It may do all you need if you are not working extensively in ME languages.
There does exist a CS6 Middle East edition. I use it daily. MENA is a
good term to use when searching for it. It is available on the Adobe
site somewhere. But it is not easy to find.