I'm not sure it was actually European but I think so. Or was on the same physical format as Tintin and Lucky Luke for instance.

I have a faint feeling that the art style was a bit more realistc and gave me a more serious feel.

It was about a couple exploring some ancient Egyptian city and finding some sort of magical artifact that triggered a pyramid shaped force field that erased everything it touched.

I read this during the early nineties I think so I don't remember many details about it sadly.

Anyone have a clue what it might've been?