* ரேச்சல் (Rēccal) - This is the closest transliteration to the English pronunciation.
Or you could choose a Tamil name with a similar meaning or sound:
* ரதி (Rati) - Meaning "love" or "desire".
* ரசிகா (Rasika) - Meaning "beautiful", "charming", or "artistic".
* ரெஜினா (Rejina) - Meaning "queen" or "royal".
The best option depends on the context and your personal preference.