How to embed Grafana report into the Dashboard

Dear all,
I would like to embed Grafana report into my Dashboard. I did it, but I have a problem since my report is not anonymous available. When I past the URL it is asking for the credentials. Without credentials is not working. Is it possible to somehow embed credentials as well? I tried with https://user:password@grafana.com, but without success. Any idea?

Not tried it but info on basic auth is here: Configure authentication | Grafana documentation

But I am using Cloud Grafana and I don't find this setting there.

I doubt that cloud Grafana allows basic auth. Almost certainly you need to use OAuth. Sorry, don't know how to integrate that with Dashboard.