What are some of the most successful Facebook pages in Middle East ?

What do you mean by successful? :-) Is it based on the number of fans, quality of content shared, engagement, or response time? Or is success based on other performance indicators? Before deciding on which pages on Facebook are truly the best, we should first define the meaning of success in this context.

That's a difficult, yet, beautiful question.
I would have to say t he following: 1.
Redbull https://www.facebook.com/redbull 2.
MiniCooper https://www.facebook.com/MINI 3.
https://www.facebook.com/DrPepper There is alot more but those are the ones that grabbed my attention.

I think Vodafone Egypt, National geographic Abu Dhabi, Pepsi Arabia and Sayfco Holding are the most successful Facebook pages in Middle East.
In my opinion, the number of fans is not a basis on how the page is being useful.
However, it is the number of visitors that visit the company website and become an actual customer that uses the products or services offered by the company! And that's why I think the previous Facebook pages is the most successful.