I think, looking at the Book of Daniel, you are not required to martyr yourself as a Christian, but can “lay low” and survive if that is your choice. In Daniel when told to bow to an idol, they did not bow, but did not make a show of it, they simply did not bow. Similarly when Daniel was ordered not to pray to anyone but the King he continued to pray to God but did not charge in and berate the king or his advisors, inviting martyrdom. When asked though, in every case in Daniel, Daniel, Shadrak, and Abednigo did not deny God when faced with martyrdom. They did not seek or avoid.
In other words, if I were a Muslim, who became a Christian, in a country with Sharia law, I’d think seriously about keeping it as quiet as possible and witness “on the sly.”
Yeah but we don’t have sharia law in the USA. Muslims are actually very fertile ground for the seed of the Gospel. They’ve been fed enough of the counterfeit to be able to recognize the real thing when shown the truth of scripture and the promise of true salvation and true peace through new life in Jesus Christ.
And thankfully in the US and other non-Muslim-ruled nations, you won’t be put to death for trying to convert them nor will they for converting. Witnessing in Muslim nations is a lot trickier, but some hardy souls do it - and with some success, too!
Muslims accepting Christ would be susceptible to persecution and death, just as early Christians faced from Jews.
The Book of Acts, Chapter 9 tells of a Jewish scholar name Saul that hated and sought Christians. On his way to Damascus, he was met by the Spirit of Christ. He, too, became a Christian and spent the rest of his life, as the apostle Paul, serving Christ, bringing Him to us Gentiles.