There shouldn't be any harmful effects on Earth, but the radiation may have created a spike in Carbon-14 in the atmosphere. This can end up being absorbed by trees. In the future researchers would be able to spot that spike in tree rings, so they'd realise that "something" happened in 2022. We've actually found spikes like this in ancient tree rings, but we don't know exactly what caused them. It could have been other gamma ray bursts or it could have been powerful solar flares.