Nietzsche approved of Islam

http://www.bogvaerker.dk/wordpress/?p=512

If Islam despises Christianity, it has a thousandfold right to do so: Islam at least assumes that it is dealing with men….
60.
Christianity destroyed for us the whole harvest of ancient civilization, and later it also destroyed for us the whole harvest of Mohammedan civilization. 

http://en.wikipedia.org/wiki/The_Antichrist_(book)#Christian_God

The Christian God is a "... declaration of war against life, against nature, against the will to live!"[24] This God is a "... formula for every slander against 'this world,' for every lie about the 'beyond'!"[24] Recalling Schopenhauer's description of the denial of the will to live and the subsequent empty nothingness,[25] Nietzsche proclaimed that the Christian God is "... the sanctification of the will to nothingness!"[24] Nietzsche criticized the "strong races of northern Europe" for accepting the Christian God and not creating a new god of their own. "Almost two thousand years — and not a single new god!"[26] He maintained that the traditional Christian God of "monotono-theism" (Monotono–Theismus) supports "... all the instincts of decadence, all cowardices and weariness of the soul ... ."[26]