in relation to
in relation to or with relation to {prep.}
In connection with; in dealing with; as concerns; in comparison to; respecting; about.
Father spoke about school in relation to finding a job when we are older.
What did you say in relation to what happened yesterday?
With relation to his job, skill is very important.
In relation to Texas, Rhode Island is quite a small state.
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Source: A Dictionary of American Idioms