Islam never criticises other Religions.Either It is christanity,Judaism, buddism or Hinduism.The book of Islam is clear about this.God says to the Prophet in the Holy Quran to teach islam (Peace) to people.If some body is not satisfied for him it is written LAKUM DEENUKUM WALI-U-UDIN--meaning that you practise your own religion and I will practise my own.There is never the compulsion to thrust Islam on any body.But it was the duty of the Prophet to show the people the right kind of the way of life (WAY OF iSLAM which wa founded by Prophet Ibraham and later on manupulated by jews and chritians).So islam has been always a peaceful religion.