Srimad Bhagavatam Canto 08, Chapter 10, Text 52

SB 8.10.52

evam daityair maha-mayair
 alaksya-gatibhi rane
srjyamanasu mayasu
 viseduh sura-sainikah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
While this magical atmosphere in the fight was being created by the invisible demons, who were expert in such illusions, the soldiers of the demigods became morose.
Srimad Bhagavatam Canto 08, Chapter 10, Text 51
Srimad Bhagavatam Canto 08, Chapter 10, Text 53