RichThesaurus
come to someone's aid
vs
pull someone's bacon out of the fire
come to someone's aid
verb
To assist and rescue someone.
pull someone's bacon out of the fire
verb
To rescue someone, especially at the last moment.
How often have the words
come to someone's aid
and
pull someone's bacon out of the fire
occurred in a corpus of books?
(source:
Google Ngram Viewer
)