Ra-The chicken tank

This build relies on Ra's close range abilities and the misguided idea of his opponents that he is a squishy caster. Being able to keep an enemy close while casting your slow and celestial beam will mean a lot more accuracy and a great deal more damage from standard attacks.
The build works for midding and solo laning in order to build up enough money to finish off the tanky items as soon as possible.
The skills to max out first are celestial beam and your ult then level divine light to 1 for the slow and solar blessing for additional damage and healing in those up close and personal fights.