From a universal perspective, there isn’t much difference. It seems to me they both come from the same Cosmic Source, they both assist the process of genetic activation, they are both here to prepare us to ride the galactic waves of energy as we enter the Golden Age.
From a historical perspective, however, there are differences. Deeksha is birthed from the Hindu tradition, which has traditionally focused on going upwards towards Spirit, dissolving into cosmic consciousness in a state of unified bliss. Ilahinoor is birthed partly within the ancient Egyptian tradition, where the focus was on physical mastery in the world of Matter.
From the perspective of spirit, we are descending into matter. From the perspective of matter, we are ascending into spirit. It is a simultaneous process, and is simply a question of whether we identify more consciously with the personality or with the soul.
In a sense we could say that Ilahinoor and Deeksha represent the yin and the yang of a cosmic polarity. After hearing hundreds of reports from people who have experienced both forms of these cosmic energies, I would say that Deeksha focuses more on the upper chakras, while Ilahinoor brings the experience deeper into the body. Many people report that Ilahinoor helps them integrate and deepen the Deeksha.
I have a sense that there are many waves of awakening sweeping through collective human consciousness as we journey towards the manifestation of the Golden Age. Each wave is birthed from the same Source, allows us to integrate what has come before, and takes us a little bit further.