Raging Thunder (魔導昇雷撃, Reijingu Sandā) is a sword technique utilised by Temujin by drawing energy from the Stone of Gelel.
By focusing gelel energy onto his sword and after dealing a blow with it, Temujin can create a powerful Gelel barrier before him. This technique was used in an attempt to negate Naruto's Rasengan. The two attacks resulted in a massive explosion that destroyed the mountain peak that Naruto and Temujin were fighting on.
Although the Japanese subtitle of this technique is written in kanji, it is pronounced in English, "Raging Thunder" (ライジングサンダー, Reijingu Sandā). The Japanese pronunciation of the kanji would be Madō Shōraigeki, which would literally translate to "Magic Rising Lightning Strike".