How to redirect to home page?

Question

CMS

The site has a stupid htaccess entry:

RewriteRule ^([Az,0-9,_\-]{0,})[/]?([Az,0-9,_,\-]{0,})[/]?([Az,0 -9,_,\-]{0,})[/]?([Az,0-9,_,\-]{0,})[/]?([Az,0-9,_,\ -]{0,})[/]?([Az,0-9,_,\-]{0,})[/]?$ index.php?p=$1&as=$2&as2=$3&as3=$4 &as4=$5&as5=$6 [QSA,L]

because of which I can not do redirects as usual, like this:

Redirect 301 /index site.ru

Because I'm getting sent here:

Location: site.ru/?p=index&as=&as2=&as3=&as4=&as5=

I found how to paste the /index page, like this:

RewriteRule ^index$ site.ru [R=301,nc]

But I can’t glue all the pages with a slash at the end, because the syntax doesn’t allow you to write like this:

RewriteRule ^index/$ site.ru [R=301,nc]

What to do in this case?