Super Cache settings which I have enabled :
Cache hits to this website for quick access. (Recommended)
Use PHP to serve cache files.
Compress pages so they’re served more quickly to visitors. (Recommended)
Cache rebuild. Serve a supercache file to anonymous users while a new file is being generated. (Recommended)
Optional – Proudly tell the world your server is Stephen Fry proof! (places a message in your blog’s footer)
Mobile device support. (External plugin or theme required. See the FAQ for further details.)
Clear all cache files when a post or page is published or updated.
Only refresh current page when comments made.
Incapsula Settings :
Use the Aggressive – cache each and every resource on the web server for bit more time than your super cache expiry.
In the advance settings enable only the comply with vary user agent.