At/on somebody’s suggestion
Definition 1 of 1
Pro Tip 1/3Influence Acknowledgement
The phrase shows that someone's idea or advice was influential in making a decision. 
On my teacher's suggestion, I entered the science fair.
Pro Tip 2/3Contextual Variety
The context can be formal or informal, such as advice from a friend or a professional recommendation. 
At my friend's suggestion, we tried the new sushi place.
Pro Tip 3/3Not Always Positive
The outcome isn't always positive; it implies the action was taken because of the suggestion, not its success. 
I bought that stock at my brother's suggestion, but it didn't pan out well.