German phrase
Sie haben mich in ~ betreut.
Meaning
You supervised me in ___
When to use it
This says you supervised me. It is formal and often academic.
Example dialogue
Sie haben mich in akademischen Angelegenheiten betreut.
You supervised me in academic matters.
Gern geschehen, ich wünsche Ihnen weiterhin viel Erfolg.
You're welcome, and I wish you continued success.