My client passed away last night. Is he safely in the light, and was my Lightworker Healing Protocol session of any help to him?

Indeed, this was instrumental in helping him transition successfully. He was in a very difficult and distressing state of mind towards the end in facing his imminent demise and the weakening effect of all of the medical treatments, and his underlying dire physical condition depleted him. This can be too much for anyone no matter their spiritual orientation. So your work was just the help needed to raise his vibration so he could be receiving healing even as the body ebbed in strength, and that allowed him to see and cooperate eagerly with the light callers reaching out to greet him and guide him safely home. It is always a blessing when people engage your services to reach out on their behalf with love to bring healing comfort to those in need, and upliftment at a time of crisis to make all the difference in continuing their soul journey.