They all will attack you at once. It is possible to line up the guards so that you are not being hit by everyone, however, there is no safe spot to attack them from. Once you have defeated all four, you will have reached a check point, making it unnecessary to kill the guards a second time for the quest. You will also go straight into a fight with the Pharaoh.
This Data was submitted by: DarkPyroNinja and ChathMurrpau
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