How to write a rule for Mod_rewrite redirect in htacess with saving the protocol and closing with a slash?

Question

Apache HTTP Server

Hello colleagues! Please help me write a rule that will want a redirect from a page without a closing slash to a page with a closing slash, while maintaining the http/https protocol. It’s not a problem to figure out the slash yourself, but when you visit https and the page without a closing slash is redirected to http with a closing slash.
Now it's like this:
HTTPS ://site.com/page - > HTTP ://site.com/page/
It should be like this:
HTTPS ://site.com/page - > HTTPS ://site.com/page/
HTTP : //site.com/page -> HTTP ://site.com/page/
Thanks in advance!