A Grizzly bear is always stronger than a Lion so it's very unlikely that the Lion will ever win a fight and kill a Grizzly bear.
When a Lion comes into a fight with A Grizzly bear you can bet that the Grizzly Bear will always win the fight and kill the Lion.
The Grizzly Bear is always more powerful than the Lion so Grizzly Bear will always win the fight 100% of the time.