Christendom’s modern rift with atheism exceeds its medieval rift with Islam

Evidence

In our own time Pope Pius XII was reported to have described the Crusades as being only a quarrel between monotheists. The point of this is that the things that divide Christendom from atheists to-day are greater than those which Christendom and Islam quarrelled about in the Middle Ages. — Norman Daniel, Islam and the West, 1492

Categorization

• QUESTION: Worth chasing whether Pius XII actually said this and in what context — the author only cites a report.