you would have to rely on a more powerful character who is escorting you through an area full of extremely powerful enemies or environmental hazards
but what would be the reason for the player to enter such an area?
To get to the other side?
Imagine you are in Valley A, and you are trying to get to Valley B, which is also your level, but between the two is Really Dangerous Canyon of the Cockatrices, so you need an escort.
You are merely trying to get through a very difficult area.
Another reason is because you are trying to collect something in a cave, filled with noxious gases (or darkness), and you need to stay close to the mage who casts a barrier of good air (or light).
^ This becomes a collection quest, but with an added mechanic that makes it feel different.
Or maybe it's a "Kill <Specific Enemy>" quest, but the specific enemy is way above your level, so it turns that boss-fight into a "survive the boss for enough time for <Your Powerful Escort> to kill the boss", which is an interesting twist on regular boss-fights, AND acts as a power-benchmark for the player looking forward to the future when he's powerful enough to kill the same species of boss (i.e. a large dragon).
it would probably play out much like a regular escort quest. you stick to the NPC like glue, not so they won't die, but so you won't die.
But conceptually, and practically, it is different:
A) When you wander outside of the escort's purview, you have ZERO nagging feeling that the AI is going to get killed.
B) You feel awed at the dangerous creatures around you.
C) Because you are in a really dangerous area, you feel extra tension and concern for yourself.
D) You are more likely to like the NPC as a character, writing-wise, then if he was a nuisance to you. Psychologically, you might even feel gratitude or admiration.
It's a very significant twist - I wish I could upvote Demiurgic_Amon several more times for suggesting it.