Facebook and CSRF Conflict

[eluser]Unknown[/eluser]
There seem to be quite a few threads around regarding the CSRF issue with Facebook app integrations. I know several people have done substantial work on new libraries, add-ons, etc but what I am looking for is a simple, straight forward solution that can be implemented on an existing application. My project has had some significant modification to the core outside of CodeIgniter and has a couple of thousand files and depends heavily on CSRF throughout so what I am really looking for is something that can be manually integrated in as simple and straight forward a manner as possible. Thanks in advance for any and all input and suggestions.