Answer:
The two lines are:
And we are here as on a darkening plain
Swept with confused alarms of struggle and flight
Step-by-step explanation:
From the excerpt, the above set of lines actually suggest that the speaker has undergone a loss of faith.
This is true because from the passage, the speaker reveals that there is a world that lies before them like a land of dream which they see as beautiful and new. The speaker discovers that the world has neither joy, nor peace, nor love, nor help for pain and then realizes that they are "on a darkening plain" and "swept with confused alarms of struggle and flight". It means that what they expected from the world they saw as land of dream wasn't what they actually found it out to be.
This then suggests that the speaker has undergone loss of hope.