Islam was concocted as an imitation of Judeo-Christian worship.
Islam is a patent fabrication, a cynical fraud, and a cheap knock-off.
Satan didn’t even try particularly hard in creating Islam, and yet it is one of the most successful of his false religions.
As far as we know the “shield of David” (consisting of two letters “D”, one superimposed on the other), wasn’t used as a Jewish symbol until the Middle Ages.
There were certainly Jews in Egypt for a long period (papyri show semitic names for slaves about 3500 years ago). At various times Jews left Egypt (see DeMille) and returned.
Alexandria in Roman times was about 1/3 Jewish, and has been called the New York of the ancient world (a great port, with a varied population, and perhaps the economic capital of the Empire).