shoulder

[KLPNO]

Hello everyone
I'd like to ask about the meaning of "shoulder" in the following context:

Throughout the district, old worm holes were being sealed and stocked with provisions. If the fires came, locals would hunker in the dark, sipping bottled air, while the ground above was saturated with pure water and complex foams guaranteed to shoulder all but the most catastrophic heat.

Does "shoulder" here mean "fight against", "deal with"?

 

[susiedqq]

means "hold against"
The wall was built to shoulder back the rocks.

"deal with" would be:
He shouldered all the family responsibililties after the death of his parents.