Our Father

Would anyone know the original text or the text that best represents the prayer that Our Saviour taught us?
The way I learned this prayer differs slightly from the way it is widely expressed today:
"...do not let us fall in temptation..."
"...and lead us not into temptation..."
The first indicates to me that we should beseech Our Father to keep us from falling while we are being tempted. - "Temptation is fire. Triumph over temptation is light." - Samael Aun Weor
The second indicates to me that we should implore Our Father to keep us from temptation.