Arabs were not there first, Indo Europeans were!
The peoples and nations of Iran, Afghanistan, Tajikistan, Pakistan, Azerbaijan and India are Indo-European to the core and have, like us Western Europeans, been forced in many places to assimilate with Judeo-Christian or Muslim invaders.
The Aryan people of the Middle East have been demonstrated by genetic studies to have pure Indo European steppe ancestry and are direct descendants of the Yamnaya.
The girl pictured here is from the Kalash tribe of Pakistan, so never let anyone say a bad word about Pakistanis! The Kalash even still practice animism and Indo European paganism.