What is meant by "a lion from the lions of Allah"?

The questioner : O Shaykh, regarding the permissibility of applying the title "Companion" to a Companion... [is it] a lion from the lions of Allah?

The Shaykh : He called him a lion from the lions of Allah because he was brave, and a brave person is always described as a lion; that is, a brave person who fights in the path of Allah.

The questioner : ...

The Shaykh : Yes, indeed, from the lions of Allah. What is its meaning? The well-known lion. There is no problem with it.