"In which Muslim country can a Christian safely stand on a street corner and preach that Mohammod was a false prophet, and that the only salvation comes through Jesus Christ?"
You mean, in which country can an individual stand in a street corner, and insult the prevailing religion without fear of repercussions by the true believers?
Why do you feel compelled to introduce the message of the love of Christ in a way that would first turn your target audience off?
Let's try your approach in a different setting.
Let's say that we are going to try converting a whole bunch of Hindus to Christianity. The way we're going to do this is by standing on a street corner in New Delhi, and shouting out to the gathered masses that they are a bunch of cow-worshipping, Khali-buggering heathens, and that they better come to Jesus or else.
You think we'll see a lot of conversions?
In the United States, anybody may stand on a street corner and say whatever they want about Jesus, with a high degree of safety. The prevailing culture is such that he will have a low fear of being assaulted by private citizens, and a high expectation that the police will protect him from being assaulted as a result of his exercising his rights under the First Amendment. If the police decline to protect him, he can bring in the feds, and can sue for enough to make himself wealthy
Let's contrast this with the likely outcome in most Islamic countries, shall we? In Pakistan , blasphemy laws call for the death penalty against anyone found guilty of insulting Islam. Egypt is a little more liberal -- you may just get three years in prison for insulting Islam. Let's not forget the Iranian fatwa against Mr Rushdie for his book.
Do I really need to contine?