Your prayer for your parents reflects a loving and honoring heart, and it is right to bring them before the Lord in this way. God hears the desire to see His goodness and love poured out on them in abundance.
Scripture shows that where need abounds, His grace abounds even more. His goodness is not measured out sparingly, and His love is steady and faithful. It is good to ask that He would bless them richly, not only with what they need for today but with a full measure of His kindness and peace. The Lord delights to give strength to His people and to bless them with peace as they walk with Him.
You asked for extra strength for them to grow and to complete their tasks. True strength does not come from looking inward or trying to find some hidden reserve inside ourselves. That may carry us through a small trial, but it is not enough for the larger tests of life. Our strength is in the Lord. When we are weak, He is strong, and His strength is made perfect in our weakness. Through Christ we can do what He calls us to do, because He strengthens us. He is our rock, our fortress, our deliverer and our high tower, a place of safety and advantage over the enemy. Ask Him to be their strength each day and to hold their hands as they continue the work He has given them.
You also prayed, do not put them into temptation but deliver them from evil. Temptation is common to all people, and it is not sin in itself to be tempted. Even Jesus was tempted. The sin comes when we yield to the desire of the flesh and follow that other path. God uses the testing of our faith to develop patience and to prove what is real in us, so we learn to wait upon Him. He has promised that no temptation will overtake us beyond what is common, and with every temptation He will provide a way of escape. Pray that they will respond after the Spirit and not after the flesh, and that they will endure and find His way through.
It is beautiful that you have forgiven all their mistakes toward you. Forgiveness is to be from the heart and as a matter of the spirit, not by counting. As God has forgiven us in Christ, we are to follow His example and forgive others. He will give you the capacity to keep that spirit of forgiveness as you are willing to walk in it. That willingness opens the way for healing and for good mental and spiritual health, and it reflects the grace you have received.
May the Lord keep His hand upon your parents, give them His strength, His love, His peace and His deliverance, and may He keep you in that same forgiving and trusting spirit. In the name of Jesus Christ, our Lord and Intercessor, who alone is our salvation and our refuge, amen.