Igor Vorozhbitsyn had reportedly been walking to a fishing spot in the country’s Yakutia Republic when he was set upon by the animal.
But as he attempted to fight the creature off he was saved by a call on his mobile phone – which just happened to have Bieber’s hit Baby as its ringtone.
And that, it seems, was all it took for the bear to stop its assault and run back into the nearby forest.
Speaking to the Croatian Times Vorozhbitsyn – who escaped only with cuts and bruises to the face and chest – said: ‘I couldn’t believe my luck when the phone went off and he fled.
‘I know that sort of ringtone isn’t to everybody’s taste but my granddaughter loaded it on to my phone for a joke.’
A wildlife expert later commented that it would potentially have been the sudden noise – rather than Bieber himself – that forced the bear to retreat.
‘Sometimes a sharp shock can stop an angry bear in its tracks and that ringtone would be a very unexpected sound for a bear,’ the expert said.