Answer: Lord Shamash will help Gilgamesh defeat Humbaba
Step-by-step explanation:
Based on the excerpt, Lord Shamash would most likely affect the battle with Humbaba as Lord Shamash will help Gilgamesh defeat Humbaba.
According to the dream that Gilgamesh had, Lord Shamash came to his rescue when he was attacked in the dream by Humbaba. Lord Shamash will stand beside him when the monster attacks and he will prevail. This infers that Lord Shamash will help Gilgamesh defeat Humbaba.