WhatsApp : Block my messages for a recipient in a group chat

Hello everyone,

I currently have a small issue that I can't seem to resolve.

I was added to a WhatsApp discussion group, but among the participants, there's someone I had previously blocked in my contacts. I see that in this group I can see their messages, and they can also see mine that I send within the group.

Since I am not one of the administrators who have access to the group's settings, I was wondering if it's possible to block this person in the group because I don't want them to see my messages.

Thank you very much for your help.