ModRewrite - how not to process certain folders for CNC?

Question

htaccess

RewriteEngine On

RewriteCond $1 !^(index\.php)
RewriteRule ^(.*)$ index.php?l=$1 [L]

I process all requests coming to the index and display the desired page by URL.
If the script is in a folder, for example, in a folder, /l/
then everything seems to be good, but if I put it in the root directory, then I completely lose control over other folders that I need / admin panel / other modules etc

Answer 1

RewriteCond %{REQUEST_FILENAME} !/directoryname/.*
Before main processing.