I got the below two lines in a .htaccess file

```
RewriteEngine on
RewriteRule !(phpmyadmin)  .system/core/index.php
php_value session.gc_maxlifetime 43200
php_value session.cookie_lifetime 43200
php_value upload_max_filesize 10M
php_value post_max_size 10M

```

On the hosting there is a CMS that handles the rewriting of the URL that I cannot control and it was not made by myself.
I would like to have an exception for a folder. The folder www.mysite.com/event should not be handled in this way and just stay into the event folder where I need to display other page. 
How can I do that? Any help will be really appreciated.