What does the cryptic crossword clue "Damage part of St Paul's Cathedral (6)" mean?

The definition is "Damage". The wordplay uses a hidden word. hidden inside/”part of”: St Paul’- S CATHE -dral The answer is SCATHE.

Damage part of St Paul's Cathedral (6)

Guardian Cryptic #29068 | 11 Across | 2023-05-12 flower