Shiva Purana
ततश्शिवगणानां च राक्षसानां परस्परम् ॥ युद्धमासीत्तदा घोरं पश्यतां दुःखकावहम् ॥ ३८॥
Then a terrible fight ensued between the attendants of Śiva and the Rākṣasa. It frightened all the onlookers with distress.
english translation
tatazzivagaNAnAM ca rAkSasAnAM parasparam ॥ yuddhamAsIttadA ghoraM pazyatAM duHkhakAvaham ॥ 38॥
hk transliteration by Sanscript