Need a litespeed friendly rule for this htaccess directive

[felosi]

This doesnt seem to work on litespeed - SetEnvIfNoCase Request_URI \.gz$ no-gzip

Or something because I am using the supercache and all and when I try to download tar.gz files I get gibberish page like mime type is not set but it is and they work on other domains in the server.

What would be a good replacement rule for this?

[mistwang]

RewriteRule \.gz$ - [E=no-gzip:1]