Why did he say "Atah Hu ha'Elokim ba'Shamayim"?
Malbim: You could not abandon us due to lack of ability, e.g. the Goyim's Mazal and Sar is stronger than You.
Why did he mention "v'Atah Moshel b'Chol Mamlachos ha'Goyim uv'Yadecha Ko'ach u'Gevurah"?
'Rashi': You rule over them. Therefore, we ask You to help us from them.
Malbim: You could not abandon us due to the Goyim's strength below. All strength comes from You!
What is the meaning of "v'Ein Imecha Lehisyatzev"?
'Rashi': No creation can stand against You, in all kingdoms of Goyim.
Malbim: You need not overpower one who opposes You - You can simply cease to influence strength on him for a moment, and he is like nothing!


