Don Colton's Risk Dice Roller

(Risk is a trademark of Parker Bros / Hasbro for their board game.)
Wikipedia Article, Attacking

How many attacking armies
How many defending armies
How many skirmishes (max)

Skirmish 1   5 6 3   5 2 attacker loses X, defender loses X
Skirmish 2   1 4 4   2 5 attacker loses X, defender loses X
Skirmish 3   6 2 6   6 3 attacker loses X, defender loses X
Skirmish 4   4 5 3   5 3 attacker loses X, defender loses X