A: You’re one of the stronger dragons, aren’t you ？
B: If you consider “starting Armageddon” strong.
↑
In the conversation, saying “consider “starting Armageddon” strong.”
I don’t know this sentence structure.
Can you separate this English sentence so that the grammar is clear ?😅
I would like your opinion!

質問を翻訳

"Consider" can have quite a few different meanings depending on the context, but in this sentence it means: "if you think 'X' to be true... (then 'Y' is obviously true, duh!)". The part in the bracket is implied, because speaker B is actually being sarcastic here, hence the "duh" part. Basically:
"Starting armageddon"= "X"
"Speaker B is one of the stronger dragons" = "Y"

So B is saying that if A thinks (considers) "starting armageddon"(X) to be something only stronger dragons can do, then yes, "B is one of the stronger dragons."(Y)

I hope this explaination wasn't too confusing. (I've never been very good at explaining things...) (^-^'')\
I'll try to translate this to Japanese, but my Japanese is still really bad, so I apologize in advance if it doesn't make sense! Hope this helped！:)

"Consider"は色々な意味があるんですが、この文には、[そう思うなら、]という意味です。つまり、Aは「あなたは一般の竜より強いじゃん？」と聞いた、それで　Bは「"armageddonを始めた"竜は一般の竜より強いと思うなら…」(そう、私が強い)と答えました。Bは　Sarcasticの気がしています。

私の日本語がまだ下手で、すみません！:)