Quran (2:191-193) - "And kill them wherever you find them, and turn them out from where they have turned you out. And Al-Fitnah [disbelief or unrest] is worse than killing...
but if they desist, then lo! Allah is forgiving and merciful. And fight them until there is no more Fitnah and worship is for Allah alone. But if they cease, let there be no transgression except against Az-Zalimun
Quran (3:151) - "Soon shall We cast terror into the hearts of the Unbelievers, for that they joined companions with Allah, for which He had sent no authority" (Specifically talking about Christians here)
Quran (4:76) - "Those who believe fight in the cause of Allah…"
Quran (4:95) - "Not equal are those of the believers who sit (at home), except those who are disabled (by injury or are blind or lame, etc.), and those who strive hard and fight in the Cause of Allah with their wealth and their lives. Allah has preferred in grades those who strive hard and fight with their wealth and their lives above those who sit (at home). Unto each, Allah has promised good (Paradise), but Allah has preferred those who strive hard and fight, above those who sit (at home) by a huge reward "
Quran (8:12) - "I will cast terror into the hearts of those who disbelieve. Therefore strike off their heads and strike off every fingertip of them"
Quran (8:39) - "And fight with them until there is no more fitna (unbelief) and religion should be only for Allah"
Quran (9:14) - "Fight against them so that Allah will punish them by your hands and disgrace them and give you victory over them and heal the breasts of a believing people."