This template will automatically categorize redirects into their appropriate rcat protection category.
#REDIRECT [[(redirect target)]]
{{r protected}}
This template is also called automatically by {{redirect category shell}}; if that template is used on the page, this template does not need to be included in the redirect cat templates as it will be called directly. A protected page also using {{r from move}} would look like this:
#REDIRECT [[(redirect target)]]
{{redirect category shell|1=
{{r from move}}
}}
For another example of this use case, see Wikipedia:Example of a broken redirect.
Fully protected: