htaccess, redirect from folder/index.php to folder/ ... how?

[eluser]slapyo[/eluser]
I want to redirect to the root if someone accesses /controller/index.php ... if for whatever reason someone would put index.php on the end of the url. I just want it to go back to the root.

http://www.somesite.com/controller/index.php -> http://www.somesite.com

.htaccess:

Code:

RewriteEngine on

RewriteCond %{THE_REQUEST} /index\.php
RewriteRule ^(.*)$ / [R=301,L]

RewriteCond $1 !^(crossdomain\.xml|index\.php|robots\.txt|css/|images/|scripts/)
RewriteRule ^(.*)$ /index.php/$1 [L]

I get the error "No input file specified."

Ideas?