Here are several versions of the Sanskrit text.
1. Devanagari with Roman transliteration:
॥विज्ञान भैरव॥
||vijñāna bhairava||
श्री देव्युवाच।
śrī devyuvāca |
श्रुतं देव मया सर्वं रुद्रयामलसम्भवम्।
त्रिकभेदमशेषेण सारात्सारविभागशः॥ १॥
śrutaṁ deva mayā sarvaṁ rudrayāmalasambhavam |
trikabhedamaśeṣeṇa sārātsāravibhāgaśaḥ || 1 ||
2. Roman transliteration by Faliero
śrī devy uvāca |
śrutaṃ deva mayā sarvaṃ rudrayāmalasambhavam |
trikabhedam aśeṣeṇa sārāt sāravibhāgaśaḥ || 1 ||
3. Phonetic sounding-out of the Sanskrit (approximately) by Dr. John Casey
shree devee uvaacha
shrutam deva mayaa sarvam
rudra yaamala sambhavam
trika bhedam asheshena
saaraat saara vibhaagashah 1