Minimum requirement for MoH exam in Saudi Arabia for graduate doctors?

Hi, I am a Pakistani M.B.B.S graduate. I have done 2 years post graduate residency training in Anesthesia form Karachi( Aga Khan University Hospital) after preliminary post graduate qualification exam FCPS I. I am now moving to Riyadh and have to discontinue my training here in Pak. What are the options for me continuing or starting my residency in Saudi Arabia? Is MoH an option for me?