How do you stay alive with the gas in the knights room w the 3rd death mask in resident evil archives?

In Resident Evil: Archives, to survive the gas in the knight's room with the third death mask, you need to first locate the gas mask in the nearby area. Once you have it, equip the gas mask to protect yourself from the toxic fumes. Afterward, focus on solving the puzzle to retrieve the death mask while avoiding any enemies that may appear. Ensure you act quickly, as the gas can cause damage over time.