The technique that Sarutobe used was "Katon! Karyuu Endan" which means "Fire Element! Fire Dragon Flame Blast". Strong as hell, however, The 2nd was able to defend against it with "Suiton! Suijinheki" which means "Water Element! Water Barrier Wall".
Yeah, too bad he had to die I watched that part over and over, the art was really cool! I forget what the name of the jutsu was but then the 2nd Hokage followed it up with an awesome water attack! Thanks for the comment!