Cyrus the Great was a Zoroastrian - the first monotheistic religion.
Mohammad's ancestors were chasing camels around the Arabian desert when Cyrus was building palaces, temples and monuments.
You're right, and they were chasing camels when Cyrus was building the foundations of modern civilization...
Don't forget Nimrod, Noah's great grandson.
http://en.wikipedia.org/wiki/nimrod_%28King%29
Things went downhill when his son took over: Poindexter I.
All the other kings made fun of his pocket protector.