i cant und shit . problem since the release of the game

The correct phrasing depends on whether you're referring to one combined chance or two separate chances being lucky.

If both are meant to be independently lucky, the clear and correct phrasing is:

"Chance to block attack and spell damage is lucky."

This implies that both block chances are lucky.

If only one is lucky, you'd specify:

"Chance to block attack or spell damage is lucky."

This suggests at least one is lucky, but not necessarily both.

For clarity, if you really mean both are independently lucky, you could also say:

"Chance to block attack damage and chance to block spell damage are lucky."

what this means ? after you block, one or the other will get lucky block chance ?

Afaik block is independently instanced. For example if you have lucky block and I hit you, it will roll twice, picking the higher number as your block chance for that hit. If I hit you again, it will pick between two numbers (high and low).