Allahu Akbar is the Muslim equivelant of the Jewish "Shema Yisrael". Jews are supposed to die saying The Shema, especially if killed by Kiddush Hashem. Muslims say Allahu Akbar at their 5 times a day prayers and when they do what they consider to be Kiddush Hashem (Dying for Allah and/or while killing infidels.).
Islam stole many things from Jews. The difference is that Judaism is peaceful and only fights against evil people while Islam is not peaceful and fights against all Non-Muslims.