That's not what he said. Cruz' statement implies that the state of Israel is the great protector of Middle East Christians - which is obviously untrue. Israel is not in a position to do much of anything for persecuted minorities in neighboring countries, even if it were so inclined.
Fact is Israel and certain Israeli citizens on FR have done whatever was asked of them. Israel offered their help in both Gulf wars but were turned down because Arabs couldn’t over come their Jew hatred even when Israel was offering to help them.