Just re-watched the episode...and copied down all the runes. Based upon what I wrote down (and I made sure I was accurate), I don't have any idea how the Englishman on the program could possibly say that the stone is a burial marker for "Rough Hueck". According to what I found, provided you overlook the incorrect usage of the S rune throughout, states something like this:

"Keils, es sudine peise runens. Peshke est meis homens"

Roughly translated...

"Hammering these southern peace runes- the Fisher of Men"

followed by the cross symbol

Come, follow me," Jesus said, "and I will make you fishers of men." Matthew 4:19

So, unless Jesus wrote in a mish-mash of Futhark and Anglo-Saxon, this isn't real...but it never said it was- only the History Channel did.