High winds and dust storm hit Cairo

Look for shelter. Even a parked car will do, if you do not have shelter, hide behind a giant rock. When possible, enclosures are your best bet. However, anything "leeward" (shielding you from the direction of the wind) of the storm will be better than nothing. Sand will bounce around when it hits objects, so you should still try to cover as much of your skin and face as possible. If you cannot get to shelter, crouch down. It minimizes the chance you'll get hit by something flying.