Suprise! they already are safe. Grendel doesn't really exist.
The only way to remain safe from Grendel is to stay out of his territory at night, specifically the mead hall. Grendel preys on those who inhabit the hall after dark and is driven by his desire to kill and cause chaos.
sleep during the day
Beowulf rescued Handscio by severing the arm of Grendel's mother as she was trying to drag Handscio into her lair. This act saved Handscio's life and prevented him from being dragged into the depths with Grendel's mother.
The weapons of Beowulf's warriors are ineffective against Grendel because Grendel put a spell on there swords to not pierce his skin.
He dies in the sea-cave lair of his mother. The open wound of his armless shoulder leads the Danes and the Geats with Beowulf to the spot, but they do not actually see the body at that time. Only after the second attack on Heorot does Beowulf find Grendel's body, at which point (presumably not longer protected by his charms as in life) Beowulf cuts off Grendel's head and returns with it to Heorot.
Grendel is said to have killed 30 men in the epic poem "Beowulf," but the exact number of men he ate is not specified.
Beowulf asked Hrothgar for permission to fight Grendel, the creature terrorizing the Danes. He requested to face Grendel alone, without weapons or armor, to prove his strength and bravery.
Yes, Beowulf kills Grendel's mother in the poem by using a giant sword that he finds in her lair. After a fierce battle, Beowulf decapitates her and returns victorious to Heorot.
Beowulf kills Grendel to protect the people of Heorot and prove his strength as a hero. Grendel had been terrorizing the Danes by attacking them in their mead hall, and Beowulf comes to their aid to rid them of this menace. It is also a way for Beowulf to gain fame and honor as a great warrior.
King Hrothgar called upon Beowulf to help him defeat the monster Grendel, who was terrorizing his kingdom of the Danes. Hrothgar had heard of Beowulf's legendary strength and bravery and believed he was the only one capable of defeating Grendel.
Beowulf had to face Grendel alone because only weapons made by humans could harm Grendel, who was invulnerable to traditional weapons. Beowulf chose to confront Grendel without any weapons to prove his strength and prowess in battle. Additionally, Beowulf's men were unable to come to his aid as Grendel used his supernatural abilities to put them in a magical sleep.
After Beowulf defeats Grendel by tearing off the monster's arm, Grendel retreats back to his lair to die. His mother seeks revenge for her son's death by attacking Heorot while Beowulf is sleeping. Beowulf then tracks her down to her underwater lair and kills her with a magical sword.
There are only 3 MAJOR battle in Beowulf: The battle against Grendel. The battle against Grendel's Mother. The battle against the Dragon. He also talks of his battles with giants and sea monsters, but those aren't actually main parts of the poem.
Beowulf asks that only he and his men fight Grendel to prove his bravery, strength, and skill in battle. He wants to show that he is a worthy warrior who can defeat the monster single-handedly.