Answer :
The given line has been taken from the following stanza of the poem "A thousand martyrs" by Aphra Behn
"A thousand martyrs I have made,
All sacrificed to my desire;
A thousand beauties have betrayed,
That languish in resistless fire.
The untamed heart to hand I brought,
And fixed the wild and wandering thought."
The line "That languish in resistless fire" means that the beauties still burn with longing and desire for the speaker.