The Arabian nation has the Camel Archer as its unique unit, which replaces the Knight unit. The advantages over Knight are obvious – neither horses nor iron are required, making you independent of those resources, and the unit can withdraw from combat (25% chance).
The Camel Archer, however, requires Archery along with the standard Guilds and Horseback Riding (also required for Knight). Those (relatively early technologies) should be discovered as soon as possible, meaning Feudalism and Machinery will be studied “by the way”.
The starting technologies are Mysticism and The Wheel, meaning it would be wise to discover Polytheism or Meditation (founding Hinduism and Buddhism respectively) right away, and afterwards turn to Masonry and Pottery (with Fishing or Agriculture).
The civilization has only 1 leader – Saladin.