To improve rank in Middle East, you must aware that Arabic is used as primary language in all Middle Eastern countries including
Saudi Arabia, United Arab Emirates, Egypt, Behrain, Qatar, Kuwait, Jordan, Oman, Iraq etc.
So if you want your site to be ranked in top sites then you should write content in
Arabic and keep in mind only content won't work.
Your keywords should be in Arabic language and your site must have Arabic language support because when Google bot crawls in Middle East countries then it checks whether your website has Arabic language support or not.
I hope this basic information will help you.