I looked up the Samaritans helpline for Finland. It's not just suicide prevention, more of a general crisis thing, but suicide is one of the things they're trained for. (I'd assume it'd be the same in Finland.)

Itsemurhien ehkäisykeskus, SOS - palvelu
Liikkuva yksikkö
KRIISILINJA
Helpline 1: 01019-0071
Website: www.evl.fi/kkh/to/kpk/pap.html