The only way to do this would be to use capabilities to eliminate root's special priviledges. If you are really paranoid, you might want to investigate encrypting the file system with the scripts and only mounting the file system after the capabilities have kicked in.
The main question I have is why are you trying to prevent root from gaining access to the scripts. Are you running on an unprotected machine? Do you not trust your system administrators?
Here are some things to think about: people with root access usually have physical access to the machine. If they want to, they can reboot the machine and run anything, completely bypassing any protection.