First, you must be able to run files using the Source Guardian loaders. So install the loaders for your system
https://www.sourceguardian.com/loaders.html

Next, you'll need to encode a file with the Source Guardian encoder. You can sign up for a 14 day trial.
The file can be as simple as: echo "Hello World"; You can name it whatever you want, I named it encoded.php so the attached file has that as the file to include.

Next, execute the php file.

I get the following:
Segmentation fault (core dumped)

It works fine on the non encoded version of the file