Existe possivelmente uma maneira mais fácil de bloquear feitiços, mas não vemos o que é.
Lockhart iria ensinar os segundos anos no Dueling Club como bloquear magias, e o Professor Snape não lhe disse que fazer isso seria impossível, então é provável que haja uma maneira relativamente fácil de bloquear magias.
“I think I’d better teach you how to block unfriendly spells,’ said Lockhart, standing flustered in the midst of the hall. He glanced at Snape, whose black eyes glinted, and looked quickly away. ‘Let’s have a volunteer pair – Longbottom and Finch-Fletchley, how about you?” - Harry Potter and the Chamber of Secrets, Chapter 11 (The Duelling Club)
Há também algo chamado hex-deflexão, que Hogwarts ensina para o quarto ano.
“Hermione hung back in their next Defence Against the Dark Arts lesson to ask Professor Moody something. The rest of the class were very eager to leave; Moody had given them such a rigorous test of hex-deflection that many of them were nursing small injuries.” - Harry Potter and the Goblet of Fire, Chapter 28 (The Madness of Mr. Crouch)
Se eles não puderem usar o Protego, eles também podem se esquivar ou bloquear com um objeto strong o suficiente.
Outra opção para defesa é simplesmente evitar ou bloquear as magias com um objeto físico em vez de um escudo conjurado. Isso funcionaria para magos incapazes de lançar um Feitiço de Escudo, e até magos habilidosos como Dumbledore usam esse método de defesa às vezes.
Sirius se esquiva de um feitiço, embora no caso dele não o ajude por muito tempo:
“Only one pair was still battling, apparently unaware of the new arrival. Harry saw Sirius duck Bellatrix’s jet of red light: he was laughing at her.
‘Come on, you can do better than that!’ he yelled, his voice echoing around the cavernous room.
The second jet of light hit him squarely on the chest. The laughter had not quite died from his face, but his eyes widened in shock.” - Harry Potter and the Order of the Phoenix, Chapter 35 (Beyond the Veil)
Até mesmo Dumbledore às vezes apenas evita o feitiço em vez de conjurar um escudo, e ele certamente é capaz de criar escudos:
“Voldemort raised his wand and another jet of green light streaked at Dumbledore, who turned and was gone in a whirling of his cloak. Next second, he had reappeared behind Voldemort and waved his wand towards the remnants of the fountain.” - Harry Potter and the Order of the Phoenix, Chapter 36 (The Only One He Ever Feared)
Ele também é capaz de impedir que a Maldição da Morte o atinja com uma estátua:
“Another jet of green light flew from behind the silver shield. This time it was the one-armed centaur, galloping in front of Dumbledore, that took the blast and shattered into a hundred pieces, but before the fragments had even hit the floor, Dumbledore had drawn back his wand and waved it as though brandishing a whip.” - Harry Potter and the Order of the Phoenix, Chapter 36 (The Only One He Ever Feared)
O Expelliarmus também é um feitiço defensivo simples e comum, mas não bloqueia feitiços.
“Right,’ said Harry, when she had sat down again, ‘shall we get practising then? I was thinking, the first thing we should do is Expelliarmus, you know, the Disarming Charm. I know it’s pretty basic but I’ve found it really useful –’
‘Oh, please,’ said Zacharias Smith, rolling his eyes and folding his arms. ‘I don’t think Expelliarmus is exactly going to help us against You-Know-Who, do you?’
‘I’ve used it against him,’ said Harry quietly. ‘It saved my life in June.” - Harry Potter and the Order of the Phoenix, Chapter 18 (Dumbledore's Army)