Did You check Your documentation already? What does the OM-B and QRH have to say about "Severe engine damage before V1" and how to spot it? Here, one is pointed towards "abnormal indications" among others - an unusually low Nl reading would doubtlessly fit this description.
Consider also that a takeoff abort due to such a malfunction will usually not be investigated into by the authorities and no report will be issued, so it is nearly impossible to serve You with hard facts here. Maybe You will find one or another incident at
Aviation Safety.net, although what You find there might not be related to Your type.