The phrase "distinguished colleagues" is used to show respect and admiration for the people you work with. It means that you consider your colleagues to be highly respected, accomplished, and prestigious in their fields. Full definition
Principals who accepted the invitation to participate expressed enthusiasm for the chance to learn from distinguished colleagues and continue their professional growth. (cps.edu)
The conference is conducted in collaboration with many distinguished colleagues from the national and international fields. (eagt.net)
When the state Assembly voted, James Wilson and Gouverneur Morris trailed less - distinguished colleagues by a wide margin, while Franklin was omitted altogether because he was thought too ill to serve. (bookbrowse.com)