Rejoice!

"ANSWER ME THIS RIGHT AND ENTER THE FIRST TREASURY, ANSWER ME THIS WRONG AND ENTER THE AFTERLIFE."

Listening to the deafening yet appealing sound, Virus took a deep breath of relief while pondering, 'It must be the riddle version. That's great!'

"It means it will only attack and kill us if we get the riddle wrong." Murmuring that briefly, Virus turned toward Henna and the veiled lady as he explained how this trial was going to work. 

As Virus was finished elaborating the situation, both women stared at the sphinx with gaping jaws. There was no doubt they were greatly nonplussed by the strange test where it didn't involve any type of battle whatsoever.

In fact, it was an extremely straightforward test, one either answers the riddle correctly and is rewarded, or that person answers it wrong and dies!