set up elysia_cron from cpanel

Hello friends,
I have a problem and I do not know how to solve it. When I set my cronjob in cpanel I write this:

php -f /home/myuser/public_html/sites/all/modules/elysia_cron/cron.php?cron_key=XXX(cron_key)

I have to do with "php-f /home/u428677607/..." because it is the only option that allows me to. But it shows me the following error:

Path can not start with "/" and Contain alphabet symbols or numbers

I've tried to put only:

php -f /home/myuser/public_html/sites/all/modules/elysia_cron/cron.php

And it is ok, but I need the cron_key...

Can you help me?

Thank you.