console (someone) on (something)
To comfort or soothe someone about a distressing topic or occurrence. I think you'll have a hard time consoling her on that lost account, considering all the hard work she put into it. I'm trying to console my daughter on the loss of her beloved teddy bear, but nothing I've said has helped thus far.
console someone on something
to comfort someone about something. I want to console you on your recent loss. They consoled Fred on the continuing difficulties he was having.