Better me than you

A whumpee who jumps in front of an attack, tricks the loved one into taking the only antidote, you know, all the lack of self-preservation that we love.

A more classic portrait of self-sacrifice than "I can take it all". The motivation is basically the same though, and the two of them might get mixed up now and then, bear with me.

Check the complete Tropes index for more.

Animes
D.Gray-man


 * Ep 11: Miranda, tied up to her old clock, is defenseless when is targeted with a bunch of pointy candles, but is saved by an already injured Allen Walker, who uses his body to shield her.

Kyou Kara Maou


 * Ep 40:(SPOILER) Konrad Weller, who had been the "traitor" for the last few episodes (he was actually undercover), stops Yuuri's execution, setting all the prisioners free. And when the army he fooled shots arrows on Yuuri, Konrad shields him with his own body.

Saiunkoku Monogatari


 * 1x03: At a royal banquet, someone tries to poison Shuurei, but the emperor, Shi Ryuuki, accepts the cup on her behalf and drinks it all, saving her and avoiding a political conflict.

TV Shows
Dirk Gently's Holistic Detective Agency


 * 1x08: Dirk Gently (Samuel Barnett), who was already weak and in pain after being shot with an arrow and continuously bleeding from it, jumps in front of Lydia, to protect her, and is shot yet again. The second arrow hits the same shoulder, only in the back this time.

His Dark Materials


 * 2x07: (SPOILER) John Parry's (Andrew Scott) family reunion is interrupted and he shields his son, taking a bullet for him.

Lucifer


 * 5x16: (SPOILER) Lucifer Morningstar (Tom Ellis) flies to Heaven to bring Chloe back, but since he is a fallen angel and therefore banished, he's supposed to burn upon arrival there. His ring protects him at some degree and, weak and carried by an old acquaintance, he chooses to give the ring to Chloe so she can get back as he starts burning.

Merlin


 * 1x04: As will be a constant on the show, Merlin (Colin Morgan) puts his life on stake to save Arthur without hesitation. After getting a "tip" that Arthur's chalice was poisoned, the wizard tries to warn everyone, but in order to prove the truth in the accusation, he has to drink it himself.
 * 1x11: To lift the curse from killing an unicorn, Arthur (Bradley James) must prove himself worthy of redemption and therefore pass the last test: he and Merlin, two cups, one of them with poison. Both of them want to be the one to sacrifice himself, but Arthur is quickier and drinks all of it, losing conscience soon after.

Dramas
100 Days my Prince


 * Ep 2: The prince's group is ambushed in the middle of the woods, and although he manages to run and hide with his bodyguard/friend Dong-joo (Do Ji Han), they still can't get away to safety. So Dong-joo uses the prince's clothes to attract the assassins attention.

Crash Landing on You


 * Ep 6: Ri Jung Hyuk (Hyun Bin) knows that they will use the military truck strategy to assassinate Se-Ri, so he plans ahead. But the truck's driver is still alive and aims at Se-Ri, so Ri Jung Hyuk shields her and is shot on the back.

Word of Honor


 * Ep 15: Being suddenly attacked by powerful elders, Gu Xiang is about to get hit by their flying blades, but Cao Wei Ning (Ma Wen Yuan) jumps in front of her and takes the blow.