Excerpt:
Christians in Sydney will have their core beliefs challenged by provocative advertisements due to appear on billboards and buses in the next month.
The ads, paid for by an Islamic group called MyPeace, will carry slogans such as "Jesus: a prophet of Islam", "Holy Quran: the final testament" and "Muhammad: mercy to mankind".
A phone number urges people to call to receive a free Koran and other Islamic literature.