The file missing would be /var/named/domain.com.db. You should be able to find it in your last Cpanel backup.
If you can't find it, copy a zone file from another domain that works, say workingdomain.com, like this:
Code:
cd /var/named
cp workingdomain.com.db domain.com.db
replace workingdomain.com domain.com -- domain.com.db
then you have to edit the file /etc/named.boot and add a line sequence to the end for your domain. It will be completely obvious what's needed when you see the file. Then restart named with "rndc reload" and check /var/log/messages for error messages. If you get it right, you'll see your domain.