Scroll down one line without moving the cursor (Vim's `Ctrl-E`) in Emacs

The shortcut scrolls one line down, without moving the cursor. It would be acceptable also to run a command from the minibuffer and then ... i guess that there is some shortcut to repeat the last command even though i can't find it at the moment. I tried commands scroll-down and scroll-down-line from the minibuffer but it looks like they did nothing