Редирект

Попробуй так:
RewriteCond %{HTTP_HOST} ^www.sait.ru
RewriteRule ^(.*)$ https://sait.ru/$1 [R=301,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_URI} !\..+$
RewriteCond %{REQUEST_URI} !/$
RewriteRule (.*) https://sait.ru/$1/ [R=301,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-l
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !/bitrix/urlrewrite.php$
RewriteRule ^(.*)$ /bitrix/urlrewrite.php [L]
RewriteRule .* - [E=REMOTE_USER:%{HTTP:Authorization}]
RewriteCond %{REQUEST_URI} ^(.*)/$  
RewriteRule .* - [L]  
RewriteCond %{ENV:REDIRECT_STATUS} 200  
RewriteRule .* - [L]  
RewriteCond %{REQUEST_METHOD} =GET  
RewriteCond %{REQUEST_URI} ^(.*)/index.php$  
RewriteRule ^(.*)$ %1/ [R=301,L]