Typically, the cases on Middle East office revolves around government-sponsored projects or state-owned enterprises. The industrial sectors themselves may vary across infrastructure (e.g. smart cities), airlines, education, healthcare, automotive, transportation, retail & commerce, financial services, and others.
I would advise you to look at the prominent industrial and functional practices of the Middle East offices at your target firms, and try to practice relevent cases accordingly (the ones focusing on government / SOE clients).
There are examples of government-focused cases on casebooks from business schools as well as complementary resources from firms such as Monitor Deloitte or BCG. It would be useful to have a practice from these sources.
Hope it helps.