Th. Nöldeke and Allah

Th. Nöldeke, a German academic specialized in the Quaran, writes:   A closer investigation of the apparent Jewish and Christian elements in the Koran will lead to the conclusion that the primary elements shared by Christianity and Islam are of Jewish colouring. For example, the familiar Muslim creed: 

 is derived from a Jewish formula; verse IISamuel 22:33 = Psalms 18:32  מבלעד יי השה מי-אל and appears in the Targum as ליחא להא אלא יי