qnli question: In classical times, what was Apollo's strong function in popular religion? sentence: In classical times, his strong function in popular religion was to keep away evil, and was therefore called "apotropaios" (ἀποτρέπω, "divert", "deter", "avert") and "alexikakos" (from v. ἀλέξω + n. κακόν, "defend from evil").