NWScript:

void main()

{

   object oCreature = GetNearestCreature(CREATURE_TYPE_PLAYER_CHAR, PLAYER_CHAR_IS_PC);

   int nDamageAmmount = 10;

   effect eEffectDamage = EffectDamage(10, DAMAGE_TYPE_FIRE, DAMAGE_POWER_NORMAL);

   if (GetIsObjectValid(oCreature) == TRUE)

     {

      ApplyEffectToObject(DURATION_TYPE_INSTANT, eEffectDamage, oCreature, 1.0);

      SpeakString("Ouch! That hurts!");

     }

}