But your claim depends on first rejecting Jesus as the Messiah, which has no good foundation.
If Jesus is the Messiah, then the people of Israel should follow him.
As for any Christians being killed in Africa:
“And fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell.” Matthew 10:28
Do you know why killing the soul is much worse than killing the body?