What does the cryptic crossword clue "Guides an oddball in prayer (5,3)" mean?

The definition is "prayer". The wordplay uses an anagram. anagram of GUIDES + AN = AGNUSDEI; definition: "prayer" The answer is AGNUSDEI.

Guides an oddball in prayer (5,3)

Independent Cryptic #11124 | 5 Down | 2022-06-08 flower