Another word for shielding

Since p can never be infinite, complete shielding is not possible.

Mary strode down the path toward them, a hand shielding the sun from her eyes.

She made her way back and circled the screaming pillar, shielding her eyes against its brightness.

Though she wasn't hungry, she drank, exploring the black curtain shielding his memories as she did.

VI.), Niobe shielding her youngest daughter.