Greek Fire was invented by a Christian Syrian Refuge, and used to defend Constaninople against the Muslims in 670 AD.
Under the old definition of Sarcaren (Syrian), the firefighters would be correct.
A Syrian Christian invented it, to burn Muslims.
Saracen was the word or description of the Muslin Warriors in the Middle East during the Crusades( 1096-1291)by the Europeans. It was not an altered word for Syrian. It applied to the people from the area stretching from modern Syria to Saudi Arabia.