As Allen looked at the golden egg, he could feel an unknown energy coursing towards him. This energy wanted to ignite something within him. However, since he was just using his Divine projection, nothing could be ignited. Furthermore, the energy was countered by his Divine energy.
The energy from the egg is released via its irresistible aura.
Indeed, it is irresistible. Even Allen, a Divine Spirit, was caught by its aura. However, that is all. It could not do anything to him.
But it is different for Cyril and Milo. They are simply followers of a Divine Spirit. However, Allen merely watched them.
Although he knew that the aura of the egg is strong, if the two did not show signs of resistance, "… they will not be worthy of my grace."
Fortunately, the two of them showed resistance, and at this time, the faith energy from their seed of faithfulness gushed out and helped them resist its aura.