Question

The people listened to him with respect​

Answer 1

but what Is query in your question

Answer 2

Question (in active voice): The people listened to him with respect.

While changing a sentence from active voice to passive voice, the subject and object get interchanged.

Answer (in passive voice): He was listened to by the people with respect.

I guess that your question was to change to passive voice. Hope this proves to be useful to you. Thank you.